Nut-lock.



PATENTED JULY 14,l 1903.

G. B. Moc. PIKE. NUT Loox.

APPLICATION FILED APR. 14, 1530?.

N0 MODEL.

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UNITED STATES atented July 14, 1903.

PATENT OEEICE,

NUT-LOC K.

SPECIFICATION forming* part Of Letters Patent NO 733,915, dated. July 14, 1903.

Application filed April 14:, 1903. Serial N0. 152,525. (N0 IllOlel.)

and the accompanying drawings, forming a part of the same.

This invention relates to improvements in nut-locks for securing the ends of rails together, the invention consisting in a novel construction of a bolt and nut whereby the fish-plates connecting the ends of the rails are secured to the said rails.

The invention also consists in an auxiliary locking plate or shoe for preventing the nut from turning on the bolt, and thereby allowing the fish-plates connecting the rails to become loose and the consequent separation or spreading of the rails.

In the drawings accompanying this specification, Figure l is a side View of the abutting ends of two rails connected by the usual fishplates and showing the locking-plate in position. Figs. 2 and 3 are sectionalviews of the same.

In the drawings, A represents the rails, and B O the {ish-plates connecting the rails. The plate B has a screw-threaded hole l, in which is screwed the outer threaded end 2 of a bolt D, havingthe usual squared head E. The web of the rail A is perforated to allow the bolt D to be passed through. The bolt D is reduced in diameter at its inner end and is screw-threaded, as shown at 3, in a direction reversely to the threaded end 2, and the threaded end 3 of the bolt is engaged by a nut F, having a squared head 4 and an internally-screw-threaded extension 5 for engaging the thread 3 of the bolt D, the plate C being provided with a perforation 6, through which the extension 5 of the nut F is passed.

The heads 4 of the nuts F are grooved, as shown at 8, and these grooves are entered by the bent-over langes 7 of a locking plate or shoe G, the plate and nuts F being preferably positioned on the inner side of the rail. The locking-plate G is placed over the squared heads 4 of the nuts F, as shown in Figs. 2 and 3, the anges 7 being entered in each of the locking-plate G is bent down over theheads of the end nuts, as shown at 9, thus preventing the locking-plate from working loose and moving in an endwise direction o the nuts F, and the flanges 7 and grooves S also prevent lateral movement of the locking-plate. It will be seen that with the plate G in position the nuts F cannot turn on the bolt D,

and the bolt D is prevented from turning in the iish-plate B by the reverse thread 3,'working in the nut F. y

While I have shown a common form of rail connection, it will be understood that the invention is not limited to this form, but may be readily adapted to various forms of rail connections without departing from my in- Vention.

1. A nut-lock consisting of a bolt having a right and left hand screw-thread for engaging respectively screw-threads in a connecting-plate and a nut, and a locking-plate for engaging said nut, substantially as described.

2. In a` nut-lock, the combination of the rails, fish plates connecting said rails, a threaded bolt having at one end a right-hand thread and at its other end a left-hand thread, or vice versa, a nut threaded internally in a direction -to engage one of said threads, and a locking-plate for engaging said nut, substantially as described.

3. In a nut-lock, the combination of the rails, the connecting-plates, one of which is provided with a threaded opening, a bolthaving a thread for engaging said threaded opening, a nut having an internal thread for engaging a second thread on said bolt, a groove formed in the head of said nuts and a locking-plate having iianges for engaging said grooves, substantially as described.

4. The combination of the rails A, the connecting-plates B, C, the headed bolt D, having the right and left hand threads 2, 3, a nut F having an internal left-hand thread for IOO engaging the bolt D, the grooves 8 formed in my hand in the presence of tWo subscribing' said nuts F and the locking-plate G provided Witnesses.

with the flanges 7 for enfravin said Grooves S in the headzs L of the nbutoFand a urned- GEORGE B MCCLELLAN PIKE' 5 down locking portion as 9, substantially as de- Witnesses:

scribed. e GEORGE H. BoTTs,

In testimony whereof I have hereunto set W. H. KENNEDY. 

